It doesn’t look like you currently have the AMP plugin activated on your website at all.

Can you please explain what kind of settings you chose after activating the plugin?

If you chose Reader or Transitional mode, it is important to note that you won’t just automatically get redirected to the AMP version when visiting the website on mobile. That’s not what this plugin aims to do.
However, if someone would land on your site via e.g. Twitter or Google Search, they would get the AMP version.

@neo619 Once you install the plugin did you choose a mode? If you choose “Reader” mode or “Transitional” mode then you will have an AMP version of your pages and posts running alongside your non AMP. Activating the plugin won’t change your non AMP or mobile site by default using these modes.

To inspect the AMP version of your pages using ‘Reader’ or ‘Transitional’ and posts there are a few options: